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Carbonization of coals into anisotropic cokes: 7. Copreheat-treatment under short contact-time conditions at high temperature |
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| Authors: | Isao Mochida Akira Shiraki Yozo Korai Toshiaki Okuhara |
| Affiliation: | 1. Research Institute of Industrial Science, Department of Molecular Engineering, Graduate School of Engineering Sciences, Kyushu University 86, Kasuga, Fukuoka, 816 Japan;1. Research and Development Laboratories-Ill Nippon Steel Corp., Yawata-Higashi, Kitakyushu, 805 Japan |
| Abstract: | The copreheat-treatment of non-fusible and slightly fusible coals with A240 and hydrogenated A240 under high temperature-short contact-time conditions around 500 °C has been examined in an attempt to produce a formed coke with better anisotropic development. These conditions shortened the copreheat-treatment time and provided better anisotropic development in the resultant coke after carbonization. Effectiveness of short contact-time has been discussed in terms of the extent of depolymerization of coal molecules suitable for anisotropic development, this being related to coal liquefaction under similar conditions. |
| Keywords: | coal formed coke high temperature-short contact-time anisotropic development |
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